US 11,998,255 B1
Cannulated continuous compression screw
Colin S. Gregersen, Salt Lake City, UT (US); T. Wade Fallin, Hyde Park, UT (US); Charles L. Saltzman, Salt Lake City, UT (US); and Chase Hagman, Salt Lake City, UT (US)
Assigned to University of Utah Research Foundation, Salt Lake City, UT (US)
Filed by University of Utah Research Foundation, Salt Lake City, UT (US)
Filed on Sep. 30, 2023, as Appl. No. 18/375,483.
Claims priority of provisional application 63/534,817, filed on Aug. 26, 2023.
Int. Cl. A61B 17/86 (2006.01); A61B 17/88 (2006.01); A61B 17/68 (2006.01)
CPC A61B 17/864 (2013.01) [A61B 17/8605 (2013.01); A61B 17/8685 (2013.01); A61B 2017/681 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A bone screw insertable into a bone, the bone screw comprising:
a distal member comprising bone-engaging threads;
a proximal member configured to slidably engage the distal member; and
a tension member comprising:
a proximal end coupled to the proximal member; and
a distal end coupled to the distal member such that, in response to motion of the distal member away from the proximal member, the tension member elongates and urges the distal member to move toward the proximal member;
wherein:
the proximal member comprises a head configured to resist insertion into the bone such that distal motion of the bone-engaging threads within the bone causes elongation of the tension member;
wherein:
the proximal member and the distal member define a longitudinal axis;
the distal member comprises a distal engagement surface facing away from the longitudinal axis;
the proximal member comprises a proximal engagement surface facing toward the longitudinal axis; and
the distal engagement surface is positioned to abut the proximal engagement surface to transmit bending loads from the distal member to the proximal member without transmission of torque about the longitudinal axis between the distal engagement surface and the proximal engagement surface.